All Flashcards
What are the differences between Ampère's Law and the Biot-Savart Law?
Ampère's Law: Easier for symmetric situations, uses closed loops. | Biot-Savart Law: More general, but often more complex to calculate, uses integration over current elements.
Compare and contrast electric and magnetic fields.
Electric Fields: Created by electric charges, exert force on charges, can be shielded. | Magnetic Fields: Created by moving charges/currents, exert force on moving charges, cannot be easily shielded.
What are the differences between Original Ampere's Law and Ampere-Maxwell Law?
Original Ampere's Law: Magnetic fields are created by electric currents. | Ampere-Maxwell Law: Magnetic fields are created by electric currents and changing electric fields.
What is Ampère's Law?
Relates magnetic field strength to the current passing through a closed loop.
What is an Amperian Loop?
An imaginary closed path used to apply Ampère's law to calculate magnetic fields.
Define permeability of free space ().
A constant that relates the magnetic field to the current that produces it in a vacuum.
What is electric flux?
A measure of the electric field passing through a given surface.
Define magnetic field strength.
The force exerted on a moving charge within a magnetic field, measured in Tesla (T).
What is a Solenoid?
A coil of wire wound into a tightly packed helix; when current runs through it, it creates a uniform magnetic field inside.
Label the following diagram of an Amperian loop around a wire.
1: Current-carrying wire, 2: Amperian loop, 3: Magnetic field direction, 4: Radius (r)